| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #define min(a, b) \ |
| ({ typeof(a) _a = (a); typeof(b) _b = (b); (_a < _b) ? _a : _b; }) |
| #define round_down(a, b) \ |
| ({ typeof(a) _a = (a); typeof(b) _b = (b); _a - (_a % _b); }) |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| #include <sparse/sparse.h> |
| |
| #include "fastboot.h" |
| |
| static char ERROR[128]; |
| |
| char *fb_get_error(void) |
| { |
| return ERROR; |
| } |
| |
| static int check_response(usb_handle *usb, unsigned int size, char *response) |
| { |
| unsigned char status[65]; |
| int r; |
| |
| for(;;) { |
| r = usb_read(usb, status, 64); |
| if(r < 0) { |
| sprintf(ERROR, "status read failed (%s)", strerror(errno)); |
| usb_close(usb); |
| return -1; |
| } |
| status[r] = 0; |
| |
| if(r < 4) { |
| sprintf(ERROR, "status malformed (%d bytes)", r); |
| usb_close(usb); |
| return -1; |
| } |
| |
| if(!memcmp(status, "INFO", 4)) { |
| fprintf(stderr,"(bootloader) %s\n", status + 4); |
| continue; |
| } |
| |
| if(!memcmp(status, "OKAY", 4)) { |
| if(response) { |
| strcpy(response, (char*) status + 4); |
| } |
| return 0; |
| } |
| |
| if(!memcmp(status, "FAIL", 4)) { |
| if(r > 4) { |
| sprintf(ERROR, "remote: %s", status + 4); |
| } else { |
| strcpy(ERROR, "remote failure"); |
| } |
| return -1; |
| } |
| |
| if(!memcmp(status, "DATA", 4) && size > 0){ |
| unsigned dsize = strtoul((char*) status + 4, 0, 16); |
| if(dsize > size) { |
| strcpy(ERROR, "data size too large"); |
| usb_close(usb); |
| return -1; |
| } |
| return dsize; |
| } |
| |
| strcpy(ERROR,"unknown status code"); |
| usb_close(usb); |
| break; |
| } |
| |
| return -1; |
| } |
| |
| static int _command_start(usb_handle *usb, const char *cmd, unsigned size, |
| char *response) |
| { |
| int cmdsize = strlen(cmd); |
| |
| if(response) { |
| response[0] = 0; |
| } |
| |
| if(cmdsize > 64) { |
| sprintf(ERROR,"command too large"); |
| return -1; |
| } |
| |
| if(usb_write(usb, cmd, cmdsize) != cmdsize) { |
| sprintf(ERROR,"command write failed (%s)", strerror(errno)); |
| usb_close(usb); |
| return -1; |
| } |
| |
| return check_response(usb, size, response); |
| } |
| |
| static int _command_data(usb_handle *usb, const void *data, unsigned size) |
| { |
| int r; |
| |
| r = usb_write(usb, data, size); |
| if(r < 0) { |
| sprintf(ERROR, "data transfer failure (%s)", strerror(errno)); |
| usb_close(usb); |
| return -1; |
| } |
| if(r != ((int) size)) { |
| sprintf(ERROR, "data transfer failure (short transfer)"); |
| usb_close(usb); |
| return -1; |
| } |
| |
| return r; |
| } |
| |
| static int _command_end(usb_handle *usb) |
| { |
| int r; |
| r = check_response(usb, 0, 0); |
| if(r < 0) { |
| return -1; |
| } |
| return 0; |
| } |
| |
| static int _command_send(usb_handle *usb, const char *cmd, |
| const void *data, unsigned size, |
| char *response) |
| { |
| int r; |
| if (size == 0) { |
| return -1; |
| } |
| |
| r = _command_start(usb, cmd, size, response); |
| if (r < 0) { |
| return -1; |
| } |
| |
| r = _command_data(usb, data, size); |
| if (r < 0) { |
| return -1; |
| } |
| |
| r = _command_end(usb); |
| if(r < 0) { |
| return -1; |
| } |
| |
| return size; |
| } |
| |
| static int _command_send_no_data(usb_handle *usb, const char *cmd, |
| char *response) |
| { |
| return _command_start(usb, cmd, 0, response); |
| } |
| |
| int fb_command(usb_handle *usb, const char *cmd) |
| { |
| return _command_send_no_data(usb, cmd, 0); |
| } |
| |
| int fb_command_response(usb_handle *usb, const char *cmd, char *response) |
| { |
| return _command_send_no_data(usb, cmd, response); |
| } |
| |
| int fb_download_data(usb_handle *usb, const void *data, unsigned size) |
| { |
| char cmd[64]; |
| int r; |
| |
| sprintf(cmd, "download:%08x", size); |
| r = _command_send(usb, cmd, data, size, 0); |
| |
| if(r < 0) { |
| return -1; |
| } else { |
| return 0; |
| } |
| } |
| |
| #define USB_BUF_SIZE 1024 |
| static char usb_buf[USB_BUF_SIZE]; |
| static int usb_buf_len; |
| |
| static int fb_download_data_sparse_write(void *priv, const void *data, int len) |
| { |
| int r; |
| usb_handle *usb = priv; |
| int to_write; |
| const char *ptr = data; |
| |
| if (usb_buf_len) { |
| to_write = min(USB_BUF_SIZE - usb_buf_len, len); |
| |
| memcpy(usb_buf + usb_buf_len, ptr, to_write); |
| usb_buf_len += to_write; |
| ptr += to_write; |
| len -= to_write; |
| } |
| |
| if (usb_buf_len == USB_BUF_SIZE) { |
| r = _command_data(usb, usb_buf, USB_BUF_SIZE); |
| if (r != USB_BUF_SIZE) { |
| return -1; |
| } |
| usb_buf_len = 0; |
| } |
| |
| if (len > USB_BUF_SIZE) { |
| if (usb_buf_len > 0) { |
| sprintf(ERROR, "internal error: usb_buf not empty\n"); |
| return -1; |
| } |
| to_write = round_down(len, USB_BUF_SIZE); |
| r = _command_data(usb, ptr, to_write); |
| if (r != to_write) { |
| return -1; |
| } |
| ptr += to_write; |
| len -= to_write; |
| } |
| |
| if (len > 0) { |
| if (len > USB_BUF_SIZE) { |
| sprintf(ERROR, "internal error: too much left for usb_buf\n"); |
| return -1; |
| } |
| memcpy(usb_buf, ptr, len); |
| usb_buf_len = len; |
| } |
| |
| return 0; |
| } |
| |
| static int fb_download_data_sparse_flush(usb_handle *usb) |
| { |
| int r; |
| |
| if (usb_buf_len > 0) { |
| r = _command_data(usb, usb_buf, usb_buf_len); |
| if (r != usb_buf_len) { |
| return -1; |
| } |
| usb_buf_len = 0; |
| } |
| |
| return 0; |
| } |
| |
| int fb_download_data_sparse(usb_handle *usb, struct sparse_file *s) |
| { |
| char cmd[64]; |
| int r; |
| int size = sparse_file_len(s, true, false); |
| if (size <= 0) { |
| return -1; |
| } |
| |
| sprintf(cmd, "download:%08x", size); |
| r = _command_start(usb, cmd, size, 0); |
| if (r < 0) { |
| return -1; |
| } |
| |
| r = sparse_file_callback(s, true, false, fb_download_data_sparse_write, usb); |
| if (r < 0) { |
| return -1; |
| } |
| |
| r = fb_download_data_sparse_flush(usb); |
| if (r < 0) { |
| return -1; |
| } |
| |
| return _command_end(usb); |
| } |